Quick answers
- Is CVE-2026-18193 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18193 being exploited in the wild.
- How severe is CVE-2026-18193?
- High severity, with a CVSS score of 8.9, published 13 August 2026.
- Which products and versions are affected?
- IBM i 7.3, 7.4, 7.5, 7.6.
- Is there a fix for CVE-2026-18193?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-18193 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-18193?
- Check whether you run IBM i at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in IBM i's improper validation of user-controlled addresses (CWE-269: Improper Privilege Management), allowing an unauthenticated remote attacker to bypass security restrictions. The attack has a high complexity factor but requires no user interaction and can impact multiple security goals (confidentiality, integrity, and availability) across system boundaries. An attacker can exploit this to gain unauthorized access to sensitive data or compromise system integrity. IBM has provided multiple PTFs (Program Temporary Fixes) for versions 7.3, 7.4, 7.5, and 7.6, available through IBM's support portal.
Affected products
- IBM IBM i 7.3, 7.4, 7.5, 7.6
Timeline
- 2026-08-13: disclosed